Described and summarized are the results of a program designed to improve the intellectual, academic, and linguistic functioning of children in a linguistically and culturally mixed setting. The program, Multicultural Improvement of Cognitive Abilities (MICA), was installed and supported by project staff in nine participating classrooms under two experimental conditions, intensive and economical, with the difference being in the extent to which they were supported by project staff. The activities were provided to all participating classrooms in addition to an ongoing bilingual program. Pupils had the opportunity to engage in approximately 100 mathematics/science activities and experiments. Each activity was self-contained and required pupils to complete worksheets using basic mathematics and literacy skills. A high degree of verbal interaction and cooperation was necessitated by the activities. The results were highly encouraging in revealing consistent positive gains that can be more or less attributed to participation in the MICA program. Attachments give details of the program as well as rationale and are appended to the document. (MP)